西園寺 舞衣

A first-year student who is a member of the string orchestra club, and in charge of the piano. Nao's younger sister who is aiming to become a professional pianist. Mai has a cheerful, friendly and emotional personality and wears her heart on her sleeve.

Mai's piano performances are always praised and she has a colorful playstyle. In order to fulfill her dream, Mai is aiming to win the upcoming competition so she can study at a famous music school outseas. However, she finds the thought of having to live away from her older sister quite hard.

She is also friends with Ayami, and often asks her to help with studying before tests. Mai also has a tendency to leave things at the last minute.